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Thread: Can you help me?

  1. #1
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    Default Can you help me?

    import javax.swing.*;
       import javax.swing.JOptionPane;
       import javax.swing.UIManager;
       import javax.swing.plaf.ColorUIResource;
     
        public class ivan3
       {
           public static void main(String[] args)
          { 
             UIManager uim=new UIManager();  															 
             uim.put("OptionPane.background",new ColorUIResource(0,0,190));					
             uim.put("Panel.background",new ColorUIResource(0,0,190));				
             uim.put("OptionPane.messageForeground",new ColorUIResource(255,255,255));
             uim.put("Panel.messageForeground",new ColorUIResource(255,255,255));
    	final String HEllo =       "SORTING AND SEARCHING NAMES!";
    int ctr = 0, ctr1 = 0, ctr2, ctr3 = 0;
    int search;
    int num = 0, cc = 0;
    String temp = "";
    String searchee = "";
     String JILL = "";
     String range = "[A-Z a-z]*"; 
    JOptionPane.showMessageDialog(null, HEllo,null,JOptionPane.PLAIN_MESSAGE);
    while (cc != 1){
    try{
    JILL = JOptionPane.showInputDialog(null, 
    "Please put a number of names you want to sorted: ");
    num = Integer.parseInt(JILL);
    }
    catch(NumberFormatException k){
    JOptionPane.showMessageDialog(null, "Numbers only, not Letters or Symbols");
    cc--;
    }
    cc++;
    }
    String name[] = new String[num];
    for (int i = 0; i < name.length; i++){
    JILL= JOptionPane.showInputDialog("Enter the name: ");
    name[i] = JILL;
    char letter = name[i].charAt(0); // charAt() is method to find character at index number and return a single character from whole string.
    if (!name[i].matches(range)){
    JOptionPane.showMessageDialog(null, "Input a Letters only.");
    i--;
    }
    else if (Character.isLowerCase(letter)){ // this code method determines whether the specified char value is lowercase.
    JOptionPane.showMessageDialog(null, 
    " Capitalization of the first letter is required.");
    i--;
    }
    }
    System.out.println("Your unsorted names: ");
    for (int f = 0; f < name.length; f++){
    System.out.println (name[f]);
    }
    while (ctr1 < name.length-1){
    ctr2 = ctr1 + 1;
    while (ctr2 < name.length){
    if (name[ctr1].compareTo(name[ctr2])>0){
    temp = name[ctr1];
    name[ctr1] = name[ctr2];
    name[ctr2] = temp;
    }
    ctr2++;
    }
    ctr1++;
    }
    System.out.println("Your Sorted names: ");
    for (int e = 0; e < name.length; e++){
    System.out.println (name[e]);
    }
     
    for (int v = 0; v != 1; v++){
    JILL = JOptionPane.showInputDialog(null, 
    "Enter the name you want to search or find.");
    searchee = JILL;
    char t = searchee.charAt(0);
    if (!searchee.matches(range)){
    JOptionPane.showMessageDialog(null, "Letters only.");
    v--;
    }
    else if (Character.isLowerCase(t)){
    JOptionPane.showMessageDialog(null, 
    "Capitalization of the first letter is required..");
    v--;
    }
    }
    while (ctr3 != name.length){
    search = ctr3;
    if (searchee.equals(name[search])){
    JOptionPane.showMessageDialog(null, "Name found SUCCESFULLY!.");
    break;
    }
    search++;
    ctr3++;
    while (true){JOptionPane.showMessageDialog(null, "Name not found.");
     
    for (int v = 0; v != 1; v++){
    JILL = JOptionPane.showInputDialog(null, 
    "Enter the name 'AGAIN' you want to search or find.");
    searchee = JILL;
    char t = searchee.charAt(0);
    if (!searchee.matches(range)){
    JOptionPane.showMessageDialog(null, "Letters only.");
    v--;
    }
    else if (Character.isLowerCase(t)){
    JOptionPane.showMessageDialog(null, 
    "Capitalization of the first letter is required..");
    v--;
    }
    if (searchee.equals(name[search])){
    JOptionPane.showMessageDialog(null, "Name found SUCCESFULLY!.");
    break;
    }
    }
    }
    }
    }
          }

    //this program is about sorting and searching a name anyone can help me fix this things?
    Last edited by Norm; January 27th, 2013 at 06:19 AM. Reason: added ending code tag

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Can you help me?

    Please explain the problems are you are having. Copy and paste here the program's output and explain what is wrong with it.

    You need to edit the post and properly format the code by adding indentations for nested statements. Unformated code is hard to read and understand. There are too many statements starting in the first column.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: Can you help me?

    my problem to that code is the looping (sorry to my grammar)
    i want to do to that code is if the name is founded the program will stop, and if the name is not found the program will looping again to the question "enter the name you want to search or find until they found. can you try that codes in your JCREATOR?

    --- Update ---

    Quote Originally Posted by Norm View Post
    Please explain the problems are you are having. Copy and paste here the program's output and explain what is wrong with it.

    You need to edit the post and properly format the code by adding indentations for nested statements. Unformated code is hard to read and understand. There are too many statements starting in the first column.

    Your unsorted names:
    Ivan
    Ass
    Your Sorted names:
    Ass
    Ivan
    Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 0
    at java.lang.String.charAt(String.java:695)
    at ivan3.main(ivan3.java:101)

    Process completed.

    that is the out put

  4. #4
    Super Moderator Norm's Avatar
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    Default Re: Can you help me?

    Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 0
    at java.lang.String.charAt(String.java:695)
    at ivan3.main(ivan3.java:101)
    The code tries to get the first character (index=0) of a String at line 101 that is empty.
    Check the code at line 101 to see why it is trying to look at characters in an empty String.
    It could use the String class's length() method to see if the String is empty.

    You need to edit the post and properly format the code by adding indentations for nested statements. Unformated code is hard to read and understand. There are too many statements starting in the first column.
    If you don't understand my answer, don't ignore it, ask a question.